What type of thermometer are you using? 100w + a 60w seem a little over kill... I have a feeling your thermometer is wrong... I use a 75w in my boas enclosure which sits at 82F ambient...
Second, there should be two hides. One on the cool side and one on the hot side (directly over the heat pad). The heat pad should cover a quarter 1/4 of one side of the enclosure. As long as you have the proper heat pad regulated by a thermostat, you shouldn't even need a heat lamp. Without a thermostat, your heat pad can reach 110F and burn your snake. You should also use a digital thermometer with a probe to monitor your heat pad, or purchase a temp gun, checking the temp over the heat pad two - three times a day.